According to The Sun, Metcalfe was shocked to see her private photos appearing online. The photos of Metcalfe, who is heavily pregnant with her first child with boyfriend Greg Lake, appeared to have been taken from a mobile phone.

Hackers have been publishing nude and intimate photos of Hollywood celebrities. They have so far leaked private photos of more than 60 celebrities. The leak came to light after Emma Watson and Amanda Seyfried's photos were published on the notorious Celeb Jihad website.

Scarlett Johannson

Reuters

This is the third-biggest leak in which private photos of celebrities have been published online. In 2011, a few Hollywood celebrities, including Scarlett Johansson, became a target of hackers. In 2014, three years after the scandal, hackers published nude photos and video of over 100 Hollywood stars, including Jennifer Lawrence, Kate Upton, Victoria Justice and Ariana Grande, in what came to be dubbed as The Fappening.

Three years later, the hackers targeted celebrities again and this time photos of Demi Lovato, WWE wrestler Paige, Holly Willoughby, Lauren Cohan, April Love, Kate Hudson, Miley Cyrus and Rosario Dawson were leaked.

Miley Cyrus

Singer and show host Miley Cyrus arrives at the 2015 MTV Video Music Awards in Los Angeles, California, August 30, 2015.Reuters